Oiled Rear Brake Disc for LEXUS ECE R90

“Oiled” is a keyword requiring special clarification. In the context of brake discs, it typically does not refer to lubricant on the disc surface (which would be extremely dangerous), but more likely indicates one of the following two scenarios:

Inaccurate description/translation issue: The most likely scenario is that this is an erroneous or simplified translation of “Coated.” This refers to a rust-preventive oily or waxy protective coating applied to the non-friction surface of the brake disc, which must be wiped off before installation.

Special Process: In rare cases, it may indicate an oil-impregnated sealing treatment applied to cast iron during manufacturing to enhance internal corrosion resistance, though this is uncommon.

Regardless of nomenclature, the core product remains an OEM-grade brake disc with rust-preventive properties, meeting the highest safety standards.

ECE R90 certification is the core requirement. It mandates that this brake disc meets identical specifications to Lexus genuine parts in critical safety metrics such as braking performance, mechanical strength, and dimensions. This constitutes the fundamental guarantee of both legal compliance and safety.

Rapid Clean Break-in: High-quality coated brake discs feature an ultra-thin, removable protective layer on their friction surface. After installation, this protective film is completely worn away during the first few braking cycles, revealing a fresh, clean friction surface. This enables a rapid, clean break-in process and prevents surface rust from improper storage from compromising braking performance.

Ensuring Braking Performance: Rear brakes bear relatively lighter loads and are more prone to rust buildup from infrequent use. The coating guarantees the brake disc surface delivers instant, effective friction when braking is required—especially during emergencies or when the electronic parking brake engages.

• 100% critical dimensions, runout and DTV inspection 

• Material physical and chemical inspection

• Test shear strength, compressibility, density, flatness and parallelism 

• Test performance and noise/NVH